:root {
    --color1: #429AD8;
    --color2: #AED8FF;
}

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background: -webkit-linear-gradient(170deg, var(--color1) 0%, var(--color1) 45%, var(--color2) 45%, var(--color2) 100%);
    background: -o-linear-gradient(170deg, var(--color1) 0%, var(--color1) 45%, var(--color2) 45%, var(--color2) 100%);
    background: -moz-linear-gradient(170deg, var(--color1) 0%, var(--color1) 45%, var(--color2) 45%, var(--color2) 100%);
    background: linear-gradient(170deg, var(--color1) 0%, var(--color1) 45%, var(--color2) 45%, var(--color2) 100%);
}

.sLogo {
    text-align: center;
    position: absolute;
    left: 5vmin;
    top: 8vmin;
    background: url(../img/cars.png) no-repeat bottom center;
    background-size: 30vmin;
    width: 30vmin;
    height: 16vmin;
    font-size: 2.35vmin;
    color: #FFFFFF;
    font-weight: bold;
    letter-spacing: .2rem;
    -webkit-transform: rotate(-12deg);
    -moz-transform: rotate(-12deg);
    -ms-transform: rotate(-12deg);
    -o-transform: rotate(-12deg);
    transform: rotate(-12deg);
}

.logo {
    position: absolute;
    top: 1vmin;
    right: 2vmin;
    background: url(../img/logo.png) no-repeat center;
    background-size: contain;
    width: 30vmin;
    height: 10vmin;
}

.system {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    position: relative;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}

.system .child {
    position: relative;
    width: 30vmin;
    min-width: 10.8rem;
    background-size: 30vmin;
    padding-top: 30vmin;
    background-repeat: no-repeat;
    background-position: top center;
    margin: 0 10vmin;
}

.system .child:nth-child(1) {
    background-image: url("../img/pic1.png");
}

.system .child:nth-child(2) {
    background-image: url("../img/pic2.png");
}

.bc1 {
    background-color: #1C85E9;
}

.bc2 {
    background-color: #559C28;
}

.system .child a {
    text-decoration: none;
    color: #FFFFFF;
    font-weight: bold;
    font-size: 1.25rem;
    display: block;
    text-align: center;
    margin-top: 1.25rem;
    border-radius: 2.65rem;
    height: 2.65rem;
    line-height: 2.65rem;
    box-shadow: 1px 1px 10px 1px #f0f0f0;
    cursor: pointer;
    letter-spacing: .088rem;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.system .child a:hover {
    opacity: .9;
    box-shadow: none;
}